Create GST invoices in 10 seconds. Automate payments with AI. Plug into your stack with a clean REST API. Built for modern Indian businesses.
Everything you need
Stop bouncing between Tally, spreadsheets, and WhatsApp PDFs.
Auto CGST/SGST/IGST. Print, WhatsApp, email — one tap.
Clients, leads, follow-ups — never lose a deal again.
Smart reminders. Know who owes what, automatically.
GSTR-1, GSTR-3B, P&L exports — ready to file.
Native iOS & Android apps. Works fully offline.
256-bit encryption. Daily backups. Your data is yours.
Every feature you see in 21bill is available as a clean, well-documented API. Generate invoices from your website, e-commerce store, or internal tools in minutes.
import { Bill21 } from "@21bill/node";
const client = new Bill21(process.env.BILL21_KEY);
const invoice = await client.invoices.create({
customer: "cus_9hF2", // GSTIN auto-fetched
items: [
{ name: "Cotton Fabric", qty: 12, rate: 850 },
{ name: "Silk Blend", qty: 4, rate: 2400 },
],
send: ["whatsapp", "email"], // 1-tap delivery
});
// → invoice.pdf_url, invoice.gst { cgst, sgst, igst }21bill's AI reads bank statements, matches payments, drafts quotations, and answers GST questions — so you can focus on growing your business.
Simple pricing
Try it for 3 months. Stay because you love it.
Perfect to try out 21bill
For growing businesses
"Switched from Tally to 21bill last month. My CA actually thanked me. The GSTR exports just work."
"The AI payment matching saved us 15 hours every month. Worth way more than ₹199."
"We integrated the API into our Shopify store in one afternoon. Customers get GST invoices automatically."
Sign up free. Send your first GST invoice today. ₹99 for the next 3 months — no credit card needed.